IIDM: Image-to-Image Diffusion Model for Semantic Image Synthesis
- URL: http://arxiv.org/abs/2403.13378v2
- Date: Tue, 20 Aug 2024 08:05:59 GMT
- Title: IIDM: Image-to-Image Diffusion Model for Semantic Image Synthesis
- Authors: Feng Liu, Xiaobin Chang,
- Abstract summary: In this paper, semantic image synthesis is treated as an image denoising task.
The style reference is first contaminated with random noise and then progressively denoised by IIDM.
Three techniques, refinement, color-transfer and model ensembles are proposed to further boost the generation quality.
- Score: 8.080248399002663
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Semantic image synthesis aims to generate high-quality images given semantic conditions, i.e. segmentation masks and style reference images. Existing methods widely adopt generative adversarial networks (GANs). GANs take all conditional inputs and directly synthesize images in a single forward step. In this paper, semantic image synthesis is treated as an image denoising task and is handled with a novel image-to-image diffusion model (IIDM). Specifically, the style reference is first contaminated with random noise and then progressively denoised by IIDM, guided by segmentation masks. Moreover, three techniques, refinement, color-transfer and model ensembles, are proposed to further boost the generation quality. They are plug-in inference modules and do not require additional training. Extensive experiments show that our IIDM outperforms existing state-of-the-art methods by clear margins. Further analysis is provided via detailed demonstrations. We have implemented IIDM based on the Jittor framework; code is available at https://github.com/ader47/jittor-jieke-semantic_images_synthesis.
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